Invalid SIM Card in Android? – Here’s How To Fix And Get Rid Of It!

Invalid Sim Card - Android

Many users have faced the Invalid sim card android problem and are interested in knowing why it occurs and how to resolve it. Don't worry if you've run into this problem; we've put together a list of the best ways to fix the "Invalid SIM card" error on Android.


What does it mean to have an invalid SIM card?

The invalid SIM card error indicates that the device is missing a SIM card, the connection is broken, or the SIM card is loose. As a result of these factors, your sim card is not working. It doesn't matter why you're getting this error message; your SIM card and its tray are connected.

The Root Causes of the Mobile Error "Invalid SIM Card"

Have you ever wondered why an error appears on your Android screen? We'd like to point out that there are two locks on your phone that could cause this error message

Network lock

It means you'll only be able to use the SIM card that came with the phone. This lock is implemented by network providers, not by phone manufacturers or Google. If you like, you can unlock it after reading a few words.

Region lock

This security feature is provided by the manufacturers of your smartphone. It means that if your SIM card is from another country or region, it will not work on your phone.

What Are Some Options For Fixing Android's "Invalid SIM Card" Error?

Now we'll show you a few different ways to fix the no SIM card error message on an Android phone. Do not panic if you receive such an error message; simply follow the steps outlined below.

Read More - Message Block is Active on Android | If I Put My SIM Card In Another Phone What Will Happen?

How to fix invalid SIM card

1. Restart Your Android Device

To replace the SIM card error, one of the quickest and simplest ways to fix the no SIM card error message is to restart your Android device.

Many annoying bugs on phones can be fixed by restarting the system, which completely refreshes the device and resolves small errors quickly. If the network is unavailable, this will allow your device to reconnect, and you can now check to see if the SIM card is properly detected.

Furthermore, this method will enable you to resolve the issue where the phone does not recognize the SIM card. If the problem persists, move on to the next step and try the other solutions.

2. Examine the SIM Card Tray


Check the Sim Card Tray for Breakages or Dirt

One of the most common causes of the error message is damage or breakage of the SIM tray. If it's broken, patch it with a piece of foam. You can put it on by removing the back cover and placing it over the SIM card before replacing it.

The error "invalid SIM card" means that your SIM card is having trouble recognizing your phone. We already tried simply turn off your Android phone and check to see if your SIM card is malfunctioning. But it is better to check that you are using a valid SIM card and double-check that everything is operational, the tray is not broken, dirty or other physical problems. This will help you figure out if the problem is with the SIM card or the tray.

3. Toggle the Airplane Mode switch

If you're sure the issue isn't with your SIM card, try switching your computer to Airplane Mode. This is due to the fact that many users found it useful. Simply follow the steps below to do so:

To begin, pull down the notification screen on your Android phone. Then look at the icons for Airplane Mode. Simply click on it to activate it. Simply click on the warning message that appears. Finally, wait 30 seconds before turning off Airplane mode by clicking on it again.

After you make this change, your phone will check for a network again, and if it is successful, your problem will be resolved.

4. Re-insert the SIM card

As we previously said, this can be caused by a faulty or loose link, so for this problem there is another manual solution. Take out the SIM card try, remove the card and thn replace the SIM card. this should be done after turning off your Android phone and removing the charger.

This is another proven way to get rid of the no SIM card errors on your phone which many users have fixed. This is usually because the SIM card might have gotten loose or out of place.

5. Select the Best Network Provider

This error occurs when the network operator selected does not match the settings on your Android phone.

To find the right network operator, go to Settings > Mobile Networks > Network Operators > Search Networks. 

After that, your device can look for a network and select a carrier from the findings.

Get yourself a new SIM card

6. Get yourself a new SIM card.

Even after reconnecting your Android phone's SIM card, you may receive the same error message.

Check to see if your SIM card is the problem if this is the case, maybe its corrupted or faulty.

In this case, its best to get in touch with your network provide and replace or purchase a new SIM card, connect it to your account, and see if your phone can detect it.

If a new SIM card is detected and works, the old one is defective and should be replaced. Your phone, on the other hand, has a problem if a new SIM card does not work. In this case, you require technical assistance on the phone itself.

7. Change to Automatic Network Mode

If your Android phone has selected the incorrect network mode, you may receive such an error message. When your phone fails to select the correct network, this this error can be displayed.

Set your network mode to auto to get rid of the error message. Take the following steps to do this:

Go to the Settings menu on your phone. Look for more networks under Connections and click on them. Then, under Mobile Networks, select Network Mode. A popup with several options will appear. Make sure to select the first option.

When you make this change, your device will automatically connect to the available network.

If you make a mistake, your phone will display No SIM Card errors.

8. Clear Cache to Fix Invalid SIM Card Error

The error message on your Android phone can also be resolved by clearing the cache. To do so, navigate to Settings > Storage > Internal Storage > Cached Data. After clicking on cached data, you'll see a popup that says "clear cache for all apps on your devices." Then press the "Delete" button to continue.

Use Your Phone in Safe Mode

9. Use Your Phone in Safe Mode  


Third-party apps can also cause your Android phone to display the error "No SIM Card." Simply enter Safe Mode on your Android device. If the error has been resolved, the problem is with the third-party software you've installed. Simply uninstall any recently added applications to avoid receiving such an error message.

10. Reset your Android device to factory settings

If none of the other options work, your device's only remaining option is to perform a factory reset. If you reset your phone to factory settings, all of your data and third-party apps will be erased.

As a result, please make a backup of all of your important data before proceeding, and then follow the steps below:

To begin, go to Settings on your phone.

Find Backup and Restore and select it.

Before resetting your app, make sure you click Backup to create a backup of all your app settings. Also, make sure that Automatic Restore is selected so that settings are restored automatically after a factory reset. From the drop-down menu, choose Reset Phone. The system will reboot automatically after you reset it, and you can now check to see if the error has been resolved.

What Is Invalid SIM Card in Android FAQ’s

How do I activate a non-working SIM card?

If your SIM card has been inactive for a while, here's how to reactivate it. First, remove the SIM card from the phone. After that, make a list of the numbers on your SIM card and contact your wireless provider to activate it. Provide your IMEI and SIM card numbers to the customer service representative. Then, check to see if your SIM card is activated by inserting it into your phone once more. 

Does a SIM card expire if it is not used? 

After you activate Sim card as a prepaid subscriber identity module, the card for phone, call, email, and internet credit that you buy expires after a certain period, as defined by the mobile carrier. It's important to keep in mind that a SIM card has no expiration date because its sole purpose is to allow the phone to recognize a cellular network.

Is it possible to reboot a SIM card?

To reset your SIM card, go through your phone and delete each piece of information. A SIM card, or subscriber identity module, stores the majority of the data that passes through your phone. You can clear the memory on your SIM card by purchasing a SIM card reader.

Wrapping Up

Many Androind users have encountered the error of an invalid SIM card before and most of them have solved it with some of the options above. There are quite a few reasons why this could happen but with the solutions in this article for the No SIM card android error, your problem should be fixed. Let us know in the comments below if your problem was fixed with another method not listed here.

About the Author
Daniel Luke
Daniel is a web designer and developer. He has been a developer for the last 10 years working with various WordPress themes that allows him to compare and contrast different themes, understand the strengths and weaknesses to develop factual, real-world reviews. He is also a mobile app developer and technology reviewer. Over several years, he has developed his own mobile apps, both on Android and iPhone. This hands-on specialisation in mobile and web development allows him to be an authoritative voices when it comes to technology reporting.

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